Home / 1,138,959.53-1,570,141.61-775,918.90

Finding the Fourth Proportional to 1,138,959.53, 1,570,141.61 and 775,918.90

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Solution

The fourth proportional to 1,138,959.53, 1,570,141.61 and 775,918.90 is: 1,069,662.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,959.53 : 1,570,141.61 = 775,918.90 : x
  2. Step 2: Convert to fraction form
    1,138,959.53/1,570,141.61 = 775,918.90/x
  3. Step 3: Cross multiply
    1,138,959.53x = 1,570,141.61 × 775,918.90
  4. Step 4: Simplify right side
    1,138,959.53x = 1,218,302,547,400.70
  5. Step 5: Solve for x
    x = 1,218,302,547,400.70/1,138,959.53
  6. Step 6: Final answer
    x = 1,069,662.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.